To
band a hummingbird, you need a band, a special pliers for closing the
band on the bird's leg, a magnifying glass to read the band number and
see details on the hummingbird's beak, a drinking straw for blowing
on the hummingbird's chest to see how much fat is present, and calipers
for measuring the hummingbird's wing and tail. You also need all the
equipment necessary for making and shaping the band and a trap.

Setting
Up Equipment

Considering
how tiny a hummingbird is, it's surprising how many different
tools are needed to measure and band one!